A new app store from Epic Games Inc., creator of the online video sensation "Fortnite," could pose a challenge to Apple Inc. (AAPL) - Get Report  and Alphabet Inc.'s (GOOGL) - Get Report  Google unit, The Wall Street Journal reported.

The Epic app store reportedly gives developers 88% of revenue from their apps, compared with 70% from Apple and Google.

"Fortnite" has racked up more than 200 million registered players who have generated more than $1 billion in revenue to date and Epic is capitalizing on that popularity by launching its own app store.

The first version of Epic's store went live earlier this month for games designed for the PC and Mac. Steam, long the most popular platform for PC games, tweaked its own fee structure in response, the Journal reported.

Epic founder and CEO Tim Sweeney is a long-time critic of the Apple and Google app store business models and maintains that both companies take too large of a cut from app sales relative to the costs involved in running the stores.

Epic said it will start selling games for Android devices sometime next year. It already distributes "Fortnite" this way, bypassing Google's Play store. 

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